Multiple-disk cutting-off machine.



J. A. HQGK. MULTIPLE DISK GUT'IINGOFF MACHINE.

APPLICATION PIYLED APR. 23, 1912.

WITNESSES outrun s'riirns PATENT enric JOHN A. HOCK, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO THE NATIONAL TUBE COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

MULTIPLE-DISK CUTTING-OFF MACHINE.

Specification of Letters Patent.

Patented May 13, 1913.

Application filed April 23, 1912. Serial No. 692,715.

To all whom it may concern:

Be it known that I, JOHN A. HooK, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in' Multiple-Disk tions by which the couplings are reamed and finished to length and are tapped to provide the internal screw threads thereon. In the manufacture of the smaller sizes of such couplings three and four couplings are formed by welding the ends of a flat plate, the bending and welding being performed in the same operation or step in the manufacture of the cou lings.

One object o" my invention is to provide a cutting-0ft machine having a series of disk cuttersconstructed and arran ed to ra idly sever a series of integrally welded coup ings into separate, individual couplings and to cut the couplings true to length.

Another object of the invention is to provide a multiple disk cutting-oil machine having novel means whereby a relative sidewise movement of the disks is effected and relative sidewise adjustment of the disks necessary on account of stretching or increase-in the over all length of the series of couplin s being severed is automatically aiforde to the end that the couplings are made of the exact length desired.

Further objects of my invention will apcar as more fully described and claimed iereinafter.

Referring to the accompanying drawings Figure 1 is a side elevation showing a multiple disk cutting-oil mach ne constructed and arranged in accordance with my inven tion. Fig. 2 is an end elevation of the same,

plings position on the coupling support in readiness for the cutting operation.

In the drawings the numeral 2 designates.

the base of the apparatus having beatings 3, in which the shaft 4 is rotatably mounted. The shaft is maintained in place by means of bearing caps 5 of the usual construction. Mounted on the shaft- 4, between the bearings 3. 3 are fast and loose pulleys 6 and 7,

the fast pulley 6 being keyed or otherwise secured on the shaft 4 so as to positively rotate the shaft, and the loose policy 7 be ing arranged to run idly on the shaft; The

pulleys 6' and 7 are connected by meansv ofa belt with the driven pulley or a countershaftor other prime mover (not shown). One end of the shaft 4-, which projects beyond one of the bearings 5 is square in cross section and mounted on the squared portion 8 of the shaft is series of cylin- I ical cutters or disks 9. The separators 10 placed between the disks 9 position the disks in the spaced apart relation desired or required at the beginning of the cutting operation of the disks and by the substitution of similar separators of greater or lesser the saves can be varied at will. The central width for those shown, the distance between openings or holes in the disks and thesepolrators 10 are square so that the squared portion 8 of the shaft will engage and positively rotate the disks and separators when the shaft is driven through the pulley 6..

Flanged sleeves 11 are mounted on. the squared portion 8 of the shaft 4 with their flanged faces in engagement with the outside faces of the on er cuttingdisks 9 and the helical springs 12 mountedon the hub portion of the sleeve 11 are arranged to yieldingly hold the face of the sleeves 11 in engagement with the cutters 9 and maintain the cutters in the spaced apart position shown in the drawings, the faces of thecute tors and the separators being in. engagement The outer end of a spring 12 engages with the end of the adjacent bearingfi and the outer end of another spring 12 engages with a washer 13 which is secured in place on the,

squared end of the shaft 4 by means of a nut llon the reduced screw threaded outer end 15 of the shaft.

Beneath the cutters mounted on the squared portion 8 of the shaft 4 is an adshowing a series of integrally formed coul justable support which, as shown, is formed of a carrier 16 which. is U-shapedin cross section, the sides '17 of this carrier having notches in their upper marginal edges in which the shaft 18 for the idler roller 19 and the shaft 20 for the eccentrically mounted idler roller 21 are mounted. The shaft 20 is mounted in its bearin s so that the roller 21 will rotate on the shaft in a path eccentricto the axis of the bearings for the shaft 20 and a hand lever 22 is keyed or otherwise secured on oneend of the shaft 20 by which the roller 21 is moved eccentrically about the axis of the shaft 20.

The support 16 has a vertically extending screw portion 23 on which the'hand wheel. 24 is p aced and the screw threaded portion 23 which extends downwardly into an opening 25 in the base2 in securing the support 16 in adjusted position on the base beneath the cutting disks is raised and lowered as required by rotating the hand wheel 24.

In the operation of my improved apparatusthe multiple couplings or other articles to be severed into pieces are placed between the rollers 19 and 21 below the cutters 9. The lever- 22 is then swung about the axis of the shaft 20 so as to move the roller 21 eccentrically and cause the multiple length coupling 26 supported on the rollers to move upwardly into engagement with the positively driven rotating cutters 9 which have been started in operation. The movement of the hand lever 22 gradually lifts the coupling into cutting engagement with the disks 9 and as. this movement is continued the cutters quickly, sever the multiple length couplings into single couplings. At the beginning of the severing operations the tapering peripheral edges of the cutters form a V-groove in the outer surface of the coupling in forming couplings of the required length, As tlfe grooves become deepened in the severing operations the grooves act as a guide to movethe end cutters 9 outwardly against the resistance of the springs 12 so as to cut the encircling grooves in the couplings in thedesired" position, as the over all length of the series of yet connected couplings increases, as it does in the severing operations. After the grooves have been formed of sufiicie'nt depth the couplings are separated from :one another and the severed couplings are removed. The springs 12 then act t" .move the cutters 9 again into engageme tpviththe separators in the reliative' position shown in the drawings.

' above described operations are then continuejdfas desired n severing other series of integrallyfo'rmed connected couplings into individual cou lings in the same manner as The advantages of my invention will be apparent to those skilled in the art. By

means of the relatively movable cu ting disks. a series of integrally conn coucrease in the length of the couplings does not form a wide groove or spiral groove in the couplings during the severlng operations as the couplings move lengthwise on the driving shaft to locate the grooves at the desired distance apart. The apparatus is simple and is easily kept in repair.

Changes may be made in the construction and arrangement of the apparatus without departing from my invention as defined in the appended claims.

I claim a 1. A cutting-off machine comprisin a driving shaft, a plurality of cutting isks mounted thereon, spacing means separating the disks on the shaft, said disks being relatively movable axially, and means yieldingly holding said disks in engagement with said spacing means to permit relative axial movement of the disks during the cutting operations.

2. A cutting-off machine comprising a driving shaft, at least three cutting disks mounted thereon, spacing meansseparating the disks, said disks being relatively movable axially on the shaft, and means yieldingly holding said disks in engagement with said spacing means to permit relative axial movement of the disks during the cutting operations. f

3. A cutting-off machine comprising a plurality of cutting disks, a shaft for positively rotating said disks on which the disks are mounted and relatively movable axially, spacing means separating said disks, and means for yieldingly holding the disks in engagement with said spacing means to dpermit relative axial movement of the isks during the cutting operations.

4. A cutting-off machine comprising at least three cutting disks, a she-ft for ositively rotating said disks on which the isks are 'mounted to be, relatively movable axially, spacing means separatin said disks, and means yieldingly holding t e disks in engagement with sai spacing means taper; mit relative axial movement of the,,,d1s ks during the cuttin operations.

5. A cutting-o machine .comprisifi a driving shaft, a plurality of cutting lsks mounted thereon, spacing means separating the disks, said disks being relatively movable axially, means yieldinglly holding said disks in engagement wit said spacing means to eimit relative axial movement 0 the disks uring the cutting operations, and

means *for supporting materialsv being cut by said disks, said means being arranged to move the materials into engagement with the cutting disks.

gin engagement With said spacing means to permit relative axial movement of the disks during the cutting operations, idler rollers beneath the disks to support materials being severed, and means for moving thematerials on said rollers to bring the materials into cutting engagement with said disks.

7. A cutting-0d machine comprising a driving shaft, at least three cuttingdisks mounted on said shaft, spacin means separating the disks on the she t, said disks being relatively movable axially on the shaft, means yieldingly holding said disks in engagement with said spacingmeans to permit relative axial movement of the disks during the cutting operations, idler rollers beneath the cutters to support materials being severed, and means ior relatively adjusting said rollers to move materials supported thereon into butting engagement with said cutting disks.

In testimony whereof, I have hereunto set my hand.

JOHN A. HOOK.

Witnesses:

ROBERT M. ERSKINE, H. R. GILBERT. 

